Minix/minix
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ARM: Enable caches

Browse Source 
First round, some more optimizations are possible and should be
activated.

Change-Id: I3b7dee7c82fbffd823a08bec1c5d5ebcf769f92f
This commit is contained in:
Lionel Sambuc
2013-02-10 20:20:14 +01:00
committed by Lionel Sambuc
parent b36292e232
commit e4fa9802cb
8 changed files with 83 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
kernel/arch/earm/memory.c
View File

@@ -100,9 +100,11 @@ static phys_bytes createpde(
pdeval = pr->p_seg.p_ttbr_v[ARM_VM_PDE(linaddr)];
} else {
/* Requested address is physical. Make up the PDE entry. */
pdeval = (linaddr & ARM_VM_SECTION_MASK) |
ARM_VM_SECTION |
ARM_VM_SECTION_DOMAIN | ARM_VM_SECTION_USER;
pdeval = (linaddr & ARM_VM_SECTION_MASK)
| ARM_VM_SECTION
| ARM_VM_SECTION_DOMAIN
| ARM_VM_SECTION_WT
| ARM_VM_SECTION_USER;
}
/* Write the pde value that we need into a pde that the kernel
@@ -189,7 +191,6 @@ static int lin_lin_copy(struct proc *srcproc, vir_bytes srclinaddr,
dstptr = createpde(dstproc, dstlinaddr, &chunk, 1, &changed);
if(changed) {
reload_ttbr0();
refresh_tlb();
}
/* Copy pages. */
PHYS_COPY_CATCH(srcptr, dstptr, chunk, addr);
@@ -305,12 +306,13 @@ int vm_lookup(const struct proc *proc, const vir_bytes virtual,
return EFAULT;
}
/* We don't expect to ever see this. */
/* We don't expect to ever see this.
* LSC Impossible with the previous test.
if(pde_v & ARM_VM_BIGPAGE) {
*physical = pde_v & ARM_VM_SECTION_MASK;
if(ptent) *ptent = pde_v;
*physical += virtual & ARM_VM_OFFSET_MASK_1MB;
} else {
} else */ {
/* Retrieve page table entry. */
pt = (u32_t *) (pde_v & ARM_VM_PDE_MASK);
assert(!((u32_t) pt % ARM_PAGETABLE_SIZE));
@@ -500,7 +502,6 @@ int vm_memset(struct proc* caller, endpoint_t who, phys_bytes ph, int c,
if (new_ttbr) {
reload_ttbr0();
refresh_tlb();
}
/* If a page fault happens, pfa is non-null */
if ((pfa = phys_memset(ptr, pattern, chunk))) {
@@ -787,5 +788,5 @@ int arch_enable_paging(struct proc * caller)
void release_address_space(struct proc *pr)
{
pr->p_seg.p_ttbr_v = NULL;
refresh_tlb();
barrier();
}